Lock your Mac by just walking away! Bluetooth Lock turns your iPhone into a key for your Mac. When you walk away from your Mac, it will be automatically locked. It is the latest and most convenient way to protect your computer from unauthorized access. Bluetooth Lock for iOS needs to come together with the Bluetooth Lock for OS X companion app that you can download from http://zipzapmac.com/BL AUTO-LOCK: Enable “Lock when signal strength is….” in Bluetooth Lock for OS X and your Mac will be automatically locked when your iOS device moves away from it. You can even be notified when your Mac is locked. FEATURES: - Perfectly designed to be easy to use. - Auto-lock when you're away from your Mac. - Show current signal strength. - Auto-Calibrate feature controls the required signal strength on which your Mac should automatically lock and unlock. - You can also manually set up the required signal strength on which your Mac should automatically lock. - Bluetooth Lock uses the latest Bluetooth 4.0 Low Energy technology to use as little energy as possible, no matter how frequent you use it! - Security feature: your OS X password is never transferred anywhere from your Mac. Bluetooth Lock for OS X stores it in your Mac's Keychain, and OS X maintains the security. Even Bluetooth Lock for iOS has no access to this information. - Bluetooth Lock for iOS and Bluetooth Lock for OS X have been designed with speed in mind. Bluetooth Lock requires an iOS device with Bluetooth LE is running iOS 8 or later, and a Mac with Bluetooth LE (Low Energy) is running OS X Yosemite or later. Macs that support Bluetooth 4.0 Low Energy: - iMac late 2012 or later - MacBook Air 2011 or later - MacBook Pro 2012 or later - Mac mini 2011 or later - Mac Pro late 2013 or later Check if your Mac supports Bluetooth Low Energy by clicking the Apple menu > About This Mac > System Report > Bluetooth. Thanks go to all the Bluetooth Lock users for their great feedback and suggestions! Please leave your Feedback & Suggestions in our Knowledge Base: http://bluetooth-lock.uservoice.com